73,1 kVIEWS
143REPLIES
34APPRECIATES
16/06/2026LAST POST
italyix a écrit
Donc je viens d'acheter le VPH-900 aussi, Tony à voltphreaks était assez gentil pour inclure les connecteurs SAE et jr. Appel d'offres gratuit. La batterie devrait être là dans quelques semaines, puis elle sera installée avec les autres goodies que j'ai prévus pour cet été.

Stock batterie 60lb, VPH 900 >10lb. Ceci avec le toit de la CF que j'ai prévu devrait raser une bonne 100lb hors de la voiture (avoir un toit ouvrant malheureusement).

Tony et en fait Braille ont également dit que la voiture pouvait rester assise jusqu'à deux semaines et n'avoir aucun problème. Ce qui m'a vendu sur l'unité voltphreaks était la coupure automatique qu'il a intégrée et la possibilité de couper la batterie, je prévois de ne pas conduire la voiture pendant un certain temps. Pas besoin de déconnecter le terminal négatif.

Si je peux me permettre, qu'est-ce qui vous fait basculer vers le VPH900 par rapport au VPR-S40 ? ;) Merci.

e92zero a écrit  
italyix a écrit
Donc je viens d'acheter le VPH-900 aussi, Tony à voltphreaks était assez gentil pour inclure les connecteurs SAE et jr. Appel d'offres gratuit. La batterie devrait être là dans quelques semaines, puis elle sera installée avec les autres goodies que j'ai prévus pour cet été.

Stock batterie 60lb, VPH 900 >10lb. Ceci avec le toit de la CF que j'ai prévu devrait raser une bonne 100lb hors de la voiture (avoir un toit ouvrant malheureusement).

Tony et en fait Braille ont également dit que la voiture pouvait rester assise jusqu'à deux semaines et n'avoir aucun problème. Ce qui m'a vendu sur l'unité voltphreaks était la coupure automatique qu'il a intégrée et la possibilité de couper la batterie, je prévois de ne pas conduire la voiture pendant un certain temps. Pas besoin de déconnecter le terminal négatif.
Si je peux me permettre, qu'est-ce qui vous fait basculer vers le VPH900 par rapport au VPR-S40 ? ;) Merci.

Strictement prix. Pour atténuer la capacité de 1/3 de la batterie d'origine, j'ai regardé dans un chargeur solaire portable à filet sur le tableau de bord de la voiture lorsqu'il est garé. Ils sont de 20 $ et mis 1,5W qui devrait être juste, si à peine assez pour compenser la perte parasitaire pendant la journée.

^thanks for the reply. Please keep us updated on how the battery perform. I might eventually go this route when it's time to replace my battery. Still on the oem battery at 77k miles, 4 yrs running. I am assuming installation doesn't require resetting of the battery registry?
e92zero wrote
^thanks for the reply. Please keep us updated on how the battery perform. I might eventually go this route when it's time to replace my battery. Still on the oem battery at 77k miles, 4 yrs running. I am assuming installation doesn't require resetting of the battery registry?
From what I am reading in the forum here, the battery will require registration under the 40 AGM charge rate. The OP took this route and appears to be running strong a year later. I will install at end of August then will do a review, along with other things.
oh I see. But if these Li batteries have an internal circuitry to handle the charging/discharging, wouldn't it be the best to register it under the 40 AGM charge rate and then disable the registry/adaptation that our car computer does by default? Is it possible or I am over-thinking it? I couldn't find any info on it.
kitw wrote
Just curious - anyone looked into the new Ballistic performance batteries?

https://www.pegasusautoracing.com/group.asp?GroupID=BALLISTICAR

Seems a lot more reasonable for even more weight savings.
Seems like it, but the reserve amps is only 20, good for a few days sitting and not running on a street car. For race purposes, this does seem to be a cheaper option to the VP one. Good find Kit!
Here is my installation of the VPH900. I fashioned a baseplate the fit into the OEM battery guides and bolts to the floor as well. The base is about 3mm thick and the and screws are countersunk flush underneath. I added heat shrink tubing to the top of the battery strap for extra protection. The battery is totally secure and is going nowhere. Unlike Velcro and string this will pass any tech inspection at the track :thumbsup:
Attached imageAttached imageAttached image
I read OP's installation and was wondering, I would never install a battery with zip ties, Velcro and a cord!!!! Sorry OP not a good installation at all, looks crappy and not professional. I agree maybe it's a good idea to have a newer technology battery, but please upgrade that installation. Look the one above.
20kg is a lot of weight saving, but you lose so much battery capacity.
you went from 85AH to 33AH
thats a huge difference

yes okay if you just have a track car then good work. but hopeless for a daily driver. i would be scared to leave the radio on for half an hour while cleaning your car or something
brownb_2 wrote
20kg is a lot of weight saving, but you lose so much battery capacity.
you went from 85AH to 33AH
thats a huge difference

yes okay if you just have a track car then good work. but hopeless for a daily driver. i would be scared to leave the radio on for half an hour while cleaning your car or something
I daily mine and have had zero issues thus far. And yes, shedding 53lbs is ALOT of weight.
THE TECH wrote
Not worth the hassle unless it's a track only car. Otherwise, your car will dead without a trickle charger. If weight was a real concern, you wouldn't have purchased an E93.
does the CCA matters...? in his case his OEM bat has 800CCA and he installed 1200CCA?
also if you swap out battery with the same AH, do I still have to register it?
italyix wrote
I daily mine and have had zero issues thus far. And yes, shedding 53lbs is ALOT of weight.
true it is a lot of weight.

but for like 4 times the price is it worth it?

you could save as much weight by not filling your tank all the way up haha ;)
brownb_2 wrote
true it is a lot of weight.

but for like 4 times the price is it worth it?

you could save as much weight by not filling your tank all the way up haha ;)
I did it in conjunction with the CF roof, Volks wheels, BBK and coilovers among the other things weighing less than OEM.

I would say for a DD don't bother, the wight savings are not worth it. For a dual purpose weekend warrior, yes.

I also just bought the Akra Evo (used) and this should net me an additional 50 lbs off the car, putting me below 3500 lbs total without driver. When I got the car corner balanced the weight was 3540 with a 1/4 tank of gas. The weight off can be felt, its like driving the car on an empty tank.

The last weight mod I need to do it seats, then I am done. Further weight savings can be had by stripping the car, but I like the interior too much plus I use the rear seats.
italyix wrote
I did it in conjunction with the CF roof, Volks wheels, BBK and coilovers among the other things weighing less than OEM.

I would say for a DD don't bother, the wight savings are not worth it. For a dual purpose weekend warrior, yes.

I also just bought the Akra Evo (used) and this should net me an additional 50 lbs off the car, putting me below 3500 lbs total without driver. When I got the car corner balanced the weight was 3540 with a 1/4 tank of gas. The weight off can be felt, its like driving the car on an empty tank.

The last weight mod I need to do it seats, then I am done. Further weight savings can be had by stripping the car, but I like the interior too much plus I use the rear seats.
agreed :D
Awesome.

I'm doing cf roof next week, and my next weight project will be a LiOn battery. Should push me under 3150 lbs with full interior still :).

Still deciding on brand-- so many choices these days!
Obioban wrote  
Awesome.

I'm doing cf roof next week, and my next weight project will be a LiOn battery. Should push me under 3150 lbs with full interior still :).

Still deciding on brand-- so many choices these days!
LiFe battery, LiPo is older tech and not as good for automotive. Just thought I'd clear that in case you were looking for batteries in the future. :)

On choices, I only had two to choose from, Braille and Voltphreaks. What sold on Voltphreaks was 1. The performance to weight and 2. The fact that it had an on board charge management systems and auto shutoff.

It was also cheaper and has more capacity that Braille.
Sorry to bump this thread up but question for the people that installed it. Did you guys have to reregister the battery a different way then normal?
Anyone? Lol
There's a thread where a poster affirmed that he registered the battery with a different rating than the stock battery (90 ah agm - stock v. 40 ah agm - voltp battery, I believe).
335_MI6 wrote
Sorry to bump this thread up but question for the people that installed it. Did you guys have to reregister the battery a different way then normal?
rantarM3 wrote
There's a thread where a poster affirmed that he registered the battery with a different rating than the stock battery (90 ah agm - stock v. 40 ah agm - voltp battery, I believe).
I have one but haven't installed it yet. But I do know that you need to have to registered at the lowest setting, which I believe is 40 or 45 agm.